Outdoor Research Alpine AscentShell Bivy - Nimbus

Outdoor ResearchSKU: OR287711-0350222

Size: One Size
Colour: Nimbus
Sale price$649.95
Size Chart


Experience alpine protection and all-night comfort without the weight when using the Alpine AscentShell Bivy from Outdoor Research. Leveraging AscentShell™ x Pertex® technology, its high breathability rating means less condensation and a more comfortable sleep. Its step-in opening allows you to step directly out of your boots and into your bed without the fuss of shimmying. Extra large head space makes room for gear, and a no-see-um mesh comes in handy when the bugs come out. 

This bivy is ideal for alpine adventures, extreme weather, or anytime you want to skip the weight and space of a tent. 

Fabric Performance

  • Waterproof
  • Breathable
  • Ultralight
  • Fully seam-taped
  • Durable
  • No-See-Um mesh

Design Features

  • Single-pole system
  • Two stake loops
  • One guy line loop
  • High volume toe end
  • Extra head room to store gear
  • Large side opening
  • Fly fastener exposes mesh screen
  • Extra large mesh screen for star-gazing


Top Width71cm (28")
Foot Width56cm (22")
Length210cm (83") 
Top Height51cm (20")

Weight: 528g (with pole), 479g (without pole)


Upper: bluesign® approved AscentShell™ x Pertex® Shield Air Diamond Fuse 3L 100% Nylon

Floor: 100% Nylon 40D with TPU lamination

Mesh: bluesign® approved 100% Polyester Mesh

Contact us within 30 days of receiving your goods to request a refund or exchange if products are eligible (see: Return Policy).

All packaging or products must be in their original, re-sellable condition.

Outlet sales are final and can only be returned for exchange. Items found faulty or under warranty will be replaced or refunded.

Some special condition products are labelled as No Refund & Exchange Products. Sale of these items are final and are not eligible for neither refunds nor exchanges.

For safety reasons, K2 cannot accept returns on climbing equipment, socks, underwear and some other products unless faulty.

Please check out our refund policy if you need more information.

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